Hi, I need your help with this Physics exercise, I hope you can help me
A pulse moving to the right along the x axis is represented by the function of
wave:

y (x, t) = 2 / (x-3t) ^ 2 + 1

Where x and are measured in centimeters and t in seconds.
a) Find the velocity, pulse amplitude, and expressions for the wave function at t = 0s, t = 1.0s
and t = 2.0 seconds.
b) What would happen if the wave function were:
y (x, t) = 2 / (x + 3t) ^ 2 + 1
How would this change the situation?

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.